WO2022218076A1

WO2022218076A1 - Pucch transmission method and apparatus, terminal and network side device

Info

Publication number: WO2022218076A1
Application number: PCT/CN2022/080614
Authority: WO
Inventors: 高雪娟; 司倩倩
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-04-16
Filing date: 2022-03-14
Publication date: 2022-10-20
Also published as: CN115226209A; EP4325966A1; EP4325966A4

Abstract

The present disclosure provides a PUCCH transmission method and apparatus, a terminal, and a network side device. The method comprises: a terminal determines a first time unit for performing PUCCH transmission on a first carrier; according to the first time unit, the terminal determines a second time unit for performing PUCCH transmission on a second carrier; and the terminal sends a PUCCH in the second time unit of the second carrier, wherein the first carrier is a carrier for transmitting the PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is a carrier for transmitting the PUCCH after the terminal performs PUCCH carrier switching.

Description

A PUCCH transmission method, device, terminal and network side equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority to Chinese Patent Application No. 202110413101.1 filed in China on April 16, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a PUCCH transmission method, apparatus, terminal, and network side equipment.

Background technique

In the fifth-generation new wireless system (5Generation New RAT, 5G NR), there are a large number of low-latency and high-reliability communication (Ultra-Reliable and Low Latency Communication, URLLC) services. URLLC services have very low latency requirements, but considering Uplink transmission and downlink transmission on the unpaired spectrum share the same spectrum resource, and time division multiplexing (TDM) transmission is required for uplink and downlink. Therefore, in a carrier group, configure the transmission physical uplink control channel (Physical Uplink Control Channel (PUCCH) carriers may be limited by the uplink and downlink allocation ratio, and the available uplink resources cannot be found in the time domain position that meets the processing time of downlink transmission. In order to avoid transmission delay and affect URLLC performance, it is proposed to PUCCH carrier switching is performed, but at present there is no specific method on how to use the PUCCH carrier switching side to perform PUCCH transmission.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a PUCCH transmission method, apparatus, terminal, and network side equipment, which can implement PUCCH transmission using the method of PUCCH carrier switching.

Embodiments of the present disclosure provide a PUCCH transmission method, including:

The terminal determines a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

The terminal determines, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

sending, by the terminal, the PUCCH in a second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching. PUCCH carrier switching is performed in a time unit.

Optionally, the determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier includes one of the following:

determining that the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining that the target time unit in the time unit overlapping with the first time unit on the second carrier is the second time unit;

Determine the second time unit according to the indication information of the first indication field of the downlink control information (Downlink Control Information, DCI) corresponding to the PUCCH that needs to perform carrier switching;

The second time unit is determined according to the preconfigured information of the first time unit.

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

In the time unit overlapping with the first time unit, there is a time unit overlapping with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.

Optionally, the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.

Optionally, the preconfigured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

Optionally, the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block (Synchronization Signal and PBCH block, SSB) on the second carrier;

Do not overlap in the time domain with the row transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

Optionally, the sub-carrier spacing (Sub-carrier Spacing, SCS) of the second carrier is greater than or equal to the SCS of the first carrier.

Optionally, the unit of the first time unit is the same as the unit of the second time unit;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.

The network side equipment determines the first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

The network side device determines, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

receiving, by the network-side device, the PUCCH sent by the terminal in the second time unit of the second carrier;

determining the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

Optionally, the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.

or

An embodiment of the present disclosure provides a terminal, including: a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

The transceiver is configured to: transmit the PUCCH in a second time unit of the second carrier;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

Embodiments of the present disclosure provide a network-side device, including: a memory, a transceiver, and a processor:

The transceiver is configured to: receive the PUCCH sent by the terminal in the second time unit of the second carrier;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

Embodiments of the present disclosure provide a PUCCH transmission apparatus, including:

a first determining unit, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a second determining unit, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a sending unit, configured to send the PUCCH in the second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching, and the terminal is determined in the first time unit of the first carrier Perform PUCCH carrier switching.

Wherein, the second determining unit specifically includes one of the following:

a first determination subunit, configured to determine the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a second determining subunit, configured to determine a target time unit in the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a third determining subunit, configured to determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

The fourth determining subunit is configured to determine the second time unit according to the preconfigured information of the first time unit.

Wherein, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

Wherein, the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

Wherein, the pre-configuration information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

Wherein, the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

Wherein, the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.

Wherein, the unit of the first time unit is the same as the unit of the second time unit;

or

a third determining unit, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a fourth determining unit, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a receiving unit, configured to receive the PUCCH sent by the terminal in the second time unit of the second carrier;

Wherein, the fourth determination unit specifically includes one of the following:

a fifth determining subunit, configured to determine the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

A sixth determination subunit, configured to determine a target time unit in the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a seventh determination subunit, configured to determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH for which carrier switching is required;

The eighth determination subunit is configured to determine the second time unit according to the preconfigured information of the first time unit.

Wherein, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

Embodiments of the present disclosure provide a processor-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the above-mentioned PUCCH transmission method.

The beneficial effects of the above-mentioned technical solutions of the present disclosure are:

In the embodiment of the present disclosure, when the PUCCH carrier switching needs to be performed, the second time for performing PUCCH transmission on the second carrier after the switching is determined based on the first time unit for performing PUCCH transmission determined on the first carrier before the PUCCH carrier switching. Therefore, the time unit for PUCCH transmission on the carrier after PUCCH carrier switching is determined without additional signaling notification or instruction, which can ensure the normal implementation of PUCCH carrier switching transmission without increasing additional signaling overhead.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Figure 1 shows a schematic diagram of the downlink scheduling sequence and the HARQ-ACK feedback sequence;

FIG. 2 shows one of the schematic flowcharts of the PUCCH transmission method according to the embodiment of the present disclosure;

FIG. 3 shows one of the schematic diagrams of time unit positions for transmitting PUCCH during PUCCH carrier switching according to an embodiment of the present disclosure;

FIG. 4 shows the second schematic diagram of the time unit position for transmitting PUCCH when the PUCCH carrier is switched according to an embodiment of the present disclosure;

FIG. 5 shows the third schematic diagram of the time unit position for transmitting PUCCH when the PUCCH carrier is switched according to an embodiment of the present disclosure;

FIG. 6 shows the fourth schematic diagram of the position of the time unit for transmitting PUCCH when the PUCCH carrier is switched according to an embodiment of the present disclosure;

FIG. 7 shows the fifth schematic diagram of the position of the time unit for transmitting PUCCH when the PUCCH carrier is switched according to an embodiment of the present disclosure;

FIG. 8 shows the sixth schematic diagram of the time unit position for transmitting PUCCH when the PUCCH carrier is switched according to an embodiment of the present disclosure;

FIG. 9 shows the second schematic flowchart of the PUCCH transmission method according to the embodiment of the present disclosure;

FIG. 10 shows one of the schematic structural diagrams of the PUCCH transmission apparatus according to the embodiment of the present disclosure;

FIG. 11 shows a schematic structural diagram of a PUCCH transmission apparatus according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present disclosure more clear, detailed description will be given below with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to assist in a comprehensive understanding of embodiments of the present disclosure. Accordingly, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It is to be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic associated with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present disclosure, it should be understood that the size of the sequence numbers of the following processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the implementation of the present disclosure The implementation of the examples constitutes no limitation.

In the embodiments of the present disclosure, the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations. The character "/" generally indicates that the associated objects are an "or" relationship.

In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar.

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

In describing the embodiments of the present disclosure, some concepts used in the following description are first explained.

Uplink Control Information (UCI) includes: Hybrid Automatic Repeat request-ACKnowledgment (HARQ-ACK), Channel State Information (CSI), Scheduling Request (SR) and other information. Among them, HARQ-ACK is a general term for positive acknowledgment (ACKnowledgment, ACK) and negative acknowledgment (Non-ACKnowledgment, NACK), which is used for physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) or indicating semi-persistent scheduling (Semi-Persistent Scheduling, SPS) resource release (Physical Downlink Control Channel, PDCCH) (also known as SPS PDSCH release) feedback to inform the base station whether PDSCH or PDCCH indicating SPS PDSCH release is received correctly; CSI is used for feedback Downlink channel quality, so as to help the base station to better perform downlink scheduling, such as modulation and coding level (Modulation and Coding Scheme, MCS) selection according to CSI, configuration of appropriate resource block (Resource Block, RB) resources, etc.; SR is used when the terminal When there is an uplink service that needs to be transmitted, request the base station for transmission resources of the Physical Uplink Shared Channel (PUSCH) carrying the uplink service. UCI is transmitted on PUCCH. PUCCH is always transmitted on a fixed carrier.

For carrier aggregation (CA) scenarios:

PUCCH is transmitted on the primary carrier (Primary Component Carrier, PCC) or primary cell (Primary Cell, PCell), when the CA scenario is configured with PUCCH on the secondary carrier (Secondary Component Carrier, SCC) or secondary cell (Secondary Cell, SCell) During transmission, the aggregated carriers can be divided into two PUCCH carrier groups. There is a designated carrier in each PUCCH carrier group to transmit PUCCH. ), the secondary PUCCH carrier group is all SCC (or SCell), and the high-level signaling configures one of the SCCs (or SCell) to transmit PUCCH, which is called PUCCH SCell. The HARQ-ACK of downlink transmission on all carriers in each carrier group (including PDSCH and PDCCH for which HARQ-ACK feedback needs to be performed) is transmitted in PUCCH on a designated carrier.

For Dual-connective (DC) scenarios:

There are two carrier groups, the Master Carrier Group (MCG) and the Secondary Carrier Group (SCG), and the PUCCH is transmitted on a designated carrier in each carrier group, where the MCG contains the PCC, and the PUCCH is on the PCC For transmission, all SCCs are SCCs, and the PUCCH is transmitted on one of the pre-configured SCCs (or called PSCells).

Flexible timing relationships are supported in 5G NR. For downlink transmission with dynamic scheduling (ie, PDCCH or DCI-scheduled transmission), including PDCCH-scheduled PDSCH, DCI-triggered type3 HARQ-ACK codebook transmission, PDCCH itself requiring HARQ-ACK, etc., for example: indicating downlink SPS resource release , the PDCCH indicating SCell dormancy (dormancy), etc. The time slot or sub-slot where the HARQ-ACK transmission is located can be based on the feedback timing indication field in the corresponding PDCCH or DCI (PDCCH and DCI can be considered equivalent, DCI is the specific transmission format of PDCCH, and PDCCH is the transmission channel of DCI). to make sure.

Taking PDSCH as an example, the PDCCH carrying its scheduling information indicates the scheduling timing relationship between PDSCH and PDCCH (Scheduling timing, that is, K0) and the feedback timing relationship between PDSCH and its corresponding HARQ-ACK (HARQ-ACK timing, that is, K1). Specifically, the time domain resource allocation indication field in the DCI format used by the PDCCH indicates the time slot offset K0 between the time slot where the PDSCH is located and the time slot where the DCI is located; the PDSCH to HARQ-ACK feedback timing indication field in the DCI format indicates the end of the PDSCH The number of time slots K1 between the start of HARQ-ACK, that is, assuming that the uplink and downlink SCSs are the same, the PDSCH transmitted in time slot n performs HARQ-ACK transmission in time slot n+K1, as shown in Figure 1.

The complete set of K1 is {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, and it is usually configured with a maximum of 8 values for the terminal. It is stipulated in the protocol that the value of K1 is in the unit of time slot (slot), that is, K1=1 means that the interval is 1 time slot; or, the value of K1 can be in the unit of time slot or sub-slot (sub-slot). , where the subslots can be preconfigured as 2 symbol lengths (that is, there are 7 subslots in sequence in one time slot), or 7 symbols in length (that is, there are 2 subslots in sequence in one time slot). Whether there is a feedback timing indication field in the DCI can be determined according to whether the number of indication bits configured by the high-level signaling is greater than 0, or it can be determined based on the number of elements in the set of feedback timing post-selection values K1 configured by the high-level signaling. When the number is greater than 1, the number of indicated bits is determined according to the number of elements (for example, ceil(log2N), N is the number of elements, and ceil is rounded up). When the number of elements is only one, there is no indication field in DCI. , directly use this value to determine the feedback timing.

For semi-static UCI, such as CSI, SR and HARQ-ACK corresponding to SPS PDSCH (SPS HARQ-ACK for short), the time slot or sub-slot where the PUCCH transmission carrying semi-static UCI is located is semi-statically determined, which is called Semi-static feedback timing. For example, CSI and SR are based on the period and offset value configured by high-level signaling to determine the time slot where each transmission opportunity is located and the symbol position in the time slot, so that they are periodically used in the corresponding time slot and corresponding symbol position. The PUCCH resources configured by higher layer signaling are transmitted. The SPS HARQ-ACK can determine the HARQ-ACK feedback position (ie, the time slot or subslot in which it is located) according to the K1 value indicated by the feedback timing indication field in the PDCCH indicating the activation of the SPS PDSCH. If there is no feedback timing indication field in the PDCCH indicating the activation of the SPS PDSCH, the HARQ-ACK feedback position may be determined according to a K1 value configured by higher layer signaling.

The PUCCH resource carrying CSI or SR is a PUCCH resource separately configured for each CSI report (report) or SR configuration by higher layer signaling. One or more PUCCH resource sets may be configured in the system for the HARQ-ACK carrying the downlink transmission with dynamic scheduling. If only one PUCCH resource set is configured, the PUCCH resources carrying the HARQ-ACK for the downlink transmission with dynamic scheduling may be based on The PUCCH resource indication field in the scheduling PDCCH is a resource selected from multiple resources in this resource set. If a resource set contains more than 8 resources, it can be combined with the PDCCH Control Channel Element (Control Channel Element, CCE) information and The PUCCH resource indication field is a resource selected from multiple resources in common; if multiple PUCCH resource sets are configured, each PUCCH resource set corresponds to a different number of UCI transmission bits, first select one of them according to the number of UCI bits carried by the PUCCH PUCCH resource set, in the selected PUCCH resource set, one resource selected from multiple resources in the resource set according to the PUCCH resource indication field in the scheduling PDCCH. If there is only one PUCCH resource in a resource set, there may be no PUCCH resource indication field in the PDCCH, and this resource is directly used for transmission.

NR also supports flexible uplink and downlink time slot allocation. On the one hand, it can semi-statically configure which of the multiple time slots included in a period of time are downlink time slots, which are uplink time slots, and which are simultaneous Contains mixed uplink and downlink time slots. For example, high-level signaling can configure the starting point of all downlink time slots, the number of consecutive all downlink time slots, the number of downlink symbols in a time slot after all downlink time slots, the first The number of uplink symbols in the time slot before one full uplink time slot, the number of consecutive full uplink time slots or the end position, etc. Wherein, symbol positions that do not indicate uplink or downlink symbols are considered as flexible symbols, and flexible symbols can be dynamically used for downlink transmission or uplink transmission. In addition, it is also possible to change the uplink and downlink configuration through dynamic instructions, for example, by periodically sending a DCI indicating a slot format (Slot Format Indication, SFI) to notify one or more consecutive The division of uplink and downlink symbols, so as to adjust the number of uplink and downlink symbols in each time slot.

The two indicators of URLLC include: high reliable transmission, such as BLER (Block Error Rate) performance of 10-5 or even lower; low latency, such as air interface one-way transmission time does not exceed 0.5ms or 1ms, etc. The UCI transmission delay of URLLC will affect the transmission delay of URLLC services. For example, the delay of HARQ-ACK feedback will affect the retransmission of PDSCH, and the delay of CSI feedback will affect the scheduling of PDSCH, thus affecting the delay of downlink services; SR The delay will affect the delay of the PUSCH, thereby affecting the delay of the uplink service. In order to reduce the PUCCH transmission delay, a method of PUCCH switching carrier transmission is proposed.

Specifically, the embodiments of the present disclosure provide a PUCCH transmission method, which can implement PUCCH transmission using the method of PUCCH carrier switching.

As shown in FIG. 2 , an embodiment of the present disclosure provides a PUCCH transmission method, which is applied to a terminal, and specifically includes the following steps:

Step 21: The terminal determines a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier.

The first carrier is a carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the terminal determines to perform PUCCH carrier switching in a first time unit of the first carrier. The first carrier is a carrier originally configured to transmit PUCCH, such as PCell or PUCCH Scell or PScell, etc. The terminal can determine the time unit position for transmitting PUCCH on the first carrier, that is, determine the first time unit, for example, for HARQ -ACK, the time unit (such as time slot or sub-slot) where the PUCCH carrying HARQ-ACK is transmitted can be determined according to the dynamic or semi-static feedback timing relationship. The configured transmission period and offset determine the periodic transmission opportunity. For example, for CSI, the configured period is 2 slots and the offset is 0 (ie, the offset value relative to the first slot in a radio frame) , then it is determined that the

time slots #

0, 2, 4, 6, 8, etc. in each radio frame are the time slots where the CSI transmission is located.

Step 22: The terminal determines, according to the first time unit, a second time unit for PUCCH transmission on the second carrier.

The second carrier is a carrier for transmitting PUCCH after the terminal performs PUCCH carrier switching. That is, the second carrier is a carrier that can perform PUCCH transmission through PUCCH carrier switching. Specifically, the terminal is configured or allowed to perform PUCCH handover between the first carrier and the second carrier. In one embodiment, switching from the first carrier to the second carrier, that is, under normal circumstances, the PUCCH is transmitted on the first carrier, and when the switching conditions are met and carrier switching is required, the first carrier is switched to the second carrier. to transmit PUCCH.

In this embodiment, when the PUCCH carrier switching needs to be performed, the terminal determines the first time unit for performing PUCCH transmission on the second carrier after the PUCCH carrier switching based on the first time unit for performing PUCCH transmission on the first carrier before the PUCCH carrier switching. Two time units.

Step 23: the terminal sends the PUCCH in the second time unit of the second carrier;

After determining the second time unit for PUCCH transmission on the second carrier based on the first time unit for PUCCH transmission determined on the first carrier, the terminal sends the PUCCH by using the second time unit of the second carrier to complete the PUCCH carrier PUCCH transmission after handover. In this case, the terminal no longer transmits the PUCCH in the first time unit of the first carrier, and the transmission behavior of the PUCCH is switched to the second time unit of the second carrier.

In this embodiment, in the first time unit in which the PUCCH needs to be transmitted on the first carrier, if it is determined that the PUCCH carrier switching needs to be performed, the target carrier after the PUCCH carrier switching can be determined according to a predetermined rule as the second carrier. The first time unit on one carrier, the second time unit on the second carrier is determined, and the PUCCH transmission is performed in the second time unit of the second carrier. The information carried on the PUCCH transmitted in the second time unit of the second carrier is the UCI on the PUCCH that needs to be transmitted in the first time unit of the first carrier before performing the PUCCH carrier switching (or only a part of it). information), after the PUCCH carrier switching, there is no need to perform PUCCH transmission in the first time unit of the first carrier, thereby realizing the PUCCH switching from one carrier to another carrier for transmission.

It should be noted that, when switching to the PUCCH transmitted in the second time unit of the second carrier, the time domain resources of the specific transmission PUCCH in the second time unit of the second carrier (for example, the specific symbol occupied in the second time unit) location and quantity) and frequency domain resources (such as the number and location of RBs, and may also include code domain resources, such as orthogonal sequences, cyclic shifts and other parameters) can be determined according to other rules, which are not limited here.

Further, the determining, according to the first time unit, the second time unit for performing PUCCH transmission on the second carrier may include one of the following manners (1) to (4):

Manner (1): Determine the time unit on the second carrier that overlaps with the first time unit as the second time unit.

Manner (2): Determine the target time unit in the time unit overlapping the first time unit on the second carrier as the second time unit.

The second time unit may be a specific time unit among the time units overlapping the first time unit on the first carrier, for example: the SCS of the first carrier is smaller or the PUCCH transmission on the first carrier In the case of a larger time unit, there may be a first time unit that overlaps with multiple second time units. In this case, a specific time unit (that is, the target time unit) among the multiple second time units may be added. It is used as a time unit for performing PUCCH transmission on the second carrier after the PUCCH carrier switching.

Optionally, the target time unit includes available PUCCH resources.

Specifically, the target time unit may include one of the following a to j:

(a) The first time unit among the time units overlapping the first time unit.

(b) The last time unit in the time units overlapping the first time unit.

(c) The time unit overlapping with the first time unit includes the first time unit of available PUCCH resources.

The first condition may include at least one of the following c1 to c5:

c1: Does not overlap with the downlink symbols on the second carrier; that is, the PUCCH resources that do not overlap with the downlink symbols (configured by higher layer signaling) on the second carrier are the available PUCCH resources.

c2: It does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier; that is, the PUCCH resource that does not overlap with the symbol occupied by the SSB on the second carrier is the available PUCCH resource.

c3: Do not overlap in the time domain with the uplink transmission configured by the high layer signaling on the second carrier; that is, the PUCCH resources that do not overlap in the time domain with the uplink transmission configured by the high layer signaling on the second carrier are the Available PUCCH resources. Wherein, the uplink transmission configured by the high-level signaling is the uplink transmission without PDCCH scheduling trigger, such as: Sounding Reference Signal (Sounding Reference Signal, SRS), semi-persistent channel state information (Semi-Persistent CSI, SP-CSI), configuration Grant (Configured Grant PUSCH, CG PUSCH) and other semi-static uplink transmission.

c4: do not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier; that is, the PUCCH resources that do not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier are the Available PUCCH resources.

c5: Meet the preparation time requirement of the information carried by the PUCCH.

The PUCCH resource that meets the preparation time requirement of the information carried on the PUCCH, for example, when the HARQ-ACK is transmitted on the PUCCH (that is, the information carried on the PUCCH is the HARQ-ACK), the downlink transmission of the HARQ-ACK needs to be carried out on the PUCCH (including PDSCH, PDCCH that needs to perform HARQ-ACK feedback, such as PDCCH indicating SPS resource release, PDCCH indicating SCell dormancy) The end position and the starting position of the PUCCH satisfy a fixed time interval, and the time interval is PDSCH Time required to process and prepare HARQ-ACK for transmission on PUCCH.

For example, it is defined as: T _proc,1 =((N ₁ +d _1,1 +d _1,2 )(2048+144)·κ2 ^−μ )·T _c , where N ₁ is related to the need for HARQ-ACK feedback For the processing time related to the processing capability of PDSCH, select a value in the processing capability list according to the reference μ, where κ is the ratio between the Long Term Evolution (LTE) adoption interval and the NR sampling interval, and μ is the index of the SCS, The reference μ is the minimum value of μ corresponding to the PDCCH scheduling PDSCH, PDSCH itself, PUCCH itself, etc., T _C is the NR interval, d ₁ , 1 is the processing time offset value of HARQ-ACK transmission on different uplink channels, if the d _1,1 =0 is transmitted on PUCCH. If d _1,1 =1 is transmitted on PUSCH, d _1,2 is a processing time offset related to the number of symbols occupied by PDSCH.

It should be noted that the specific content of the first condition to be satisfied by the available PUCCH resources is set according to requirements, that is, the first condition may include one or more of c1 to c5. For example: PUCCH resources that do not overlap with downlink symbols on the second carrier and do not overlap with symbols occupied by the synchronization signal block SSB on the second carrier are the available PUCCH resources; The uplink transmission configured by the upper layer signaling does not overlap in the time domain and the frequency domain, and the PUCCH resource that meets the preparation time requirement of the information carried by the PUCCH is the available PUCCH resource. The specific content of the first condition that needs to be satisfied by the available PUCCH resources is set according to requirements. The other combinations are not described in detail.

(d) The time unit overlapping with the first time unit includes the last time unit of available PUCCH resources.

(e) Among the time units overlapping the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier.

(f) Among the time units overlapping the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier.

(g) Among the time units overlapping with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier.

(h) Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end time of the PUCCH on the first carrier.

(i) among the time units overlapping with the first time unit, the first time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier;

(j) Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.

For (i) and (j), the symbols occupied by the PUCCH on the first carrier may be multiple symbols in the time domain, and different symbols may overlap with different time units, so there are multiple time units and PUCCH In the case where the occupied symbols overlap, one of the time units can be selected as the target time unit, for example, select the first one that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier Time unit or last time unit.

Mode (3): Determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

Specifically, the indication information of the first indication field may include one of the following:

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

In this embodiment, for the PUCCH with the corresponding DCI, when the PUCCH carrier is switched, the second time unit for transmitting the PUCCH on the second carrier may be determined based on a first indication field in the DCI, the first indication The field may be a reuse of an existing indication field included in the DCI or a newly added indication field. The first indication field is used to indicate a second time unit on a second carrier (that is, the indication information of the first indication field directly indicates the information of the second time unit), or the indication is relative to the first time unit. The time domain offset of the time domain position of the PUCCH on the carrier, or indicating the time domain offset relative to the first time unit on the first carrier. The unit of the time domain offset may be a symbol or a PUCCH transmission time unit, and the unit of the symbol or the PUCCH transmission time unit is a unit corresponding to the second carrier.

Manner (4): Determine the second time unit according to the preconfigured information of the first time unit.

Specifically, the preconfigured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

In this embodiment, a corresponding second time unit on the second carrier may be pre-defined or pre-configured for each first time unit on the first carrier that can perform PUCCH switching (that is, the second time unit on the second carrier is pre-defined or pre-configured). information of time unit), or pre-defined or pre-configured a time domain offset value, the time domain offset value is used to indicate the time domain offset of the time domain position of the PUCCH on the second carrier relative to the time domain position of the PUCCH on the first carrier shift, or indicate a time domain offset relative to the first time unit. The unit of the time domain offset may be a symbol or a PUCCH transmission time unit, and the unit of the symbol or the PUCCH transmission time unit is a unit corresponding to the second carrier.

As an optional embodiment, the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.

In this embodiment, the SCS of the first carrier and the second carrier are the same; or the SCS of the first carrier is not greater than the SCS of the second carrier. For example, if the SCS of the second carrier is 15kHz, the SCS of the first carrier is also 15kHz; for another example: the SCS of the second carrier is 30kHz, and the SCS of the first carrier may be 15kHz or 30kHz, etc. .

As an optional embodiment, the unit of the first time unit is the same as the unit of the second time unit; for example, the units of the first time unit and the second time unit are time slots, or both subslots of the same length.

Alternatively, the unit of the first time unit is different from the unit of the second time unit, for example, the number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit. That is, the PUCCH transmission time unit on the first carrier is not larger than the PUCCH transmission time unit on the second carrier. For example: the PUCCH transmission time unit on the first carrier is a time slot, then the PUCCH transmission time unit on the second carrier is also a time slot; the PUCCH transmission time unit on the first carrier is a sub-slot with a length of 7 symbols , the PUCCH transmission time unit on the second carrier can be a time slot or a subslot with a length of 7 symbols, but cannot be a subslot with a length of 2 symbols.

The unit of the transmission time unit may be one of a time slot and a sub-slot, and the sub-slots may have different lengths, such as a 2-symbol sub-slot or a 7-symbol sub-slot. If the unit of the PUCCH transmission time unit is not configured on the second carrier, it is determined that the transmission is performed according to the same PUCCH transmission time unit as that on the first carrier or a pre-agreed PUCCH transmission time unit.

The following describes an implementation process of the PUCCH transmission method according to the embodiment of the present disclosure through specific embodiments.

Example one:

As shown in FIG. 3 , the first carrier is a carrier configured before PUCCH carrier switching for PUCCH transmission (such as PCell, PUCCH Scell or PScell, etc.), and the second carrier is a carrier on which PUCCH can perform PUCCH transmission through carrier switching. The first carrier Same as the SCS of the second carrier. On the first carrier and the second carrier, the PUCCH is transmitted according to the time slot as the transmission time unit, that is, the time domain resources of each PUCCH will not exceed one time slot, that is, the unit of the feedback timing on the first carrier is time Slot (ie, a slot is a unit of a PUCCH transmission time unit).

In the first example, according to k1 indicated by the feedback timing indication field in the PDCCH, and the time slot m where the PDSCH transmission scheduled by the PDCCH is located, it can be determined that the HARQ-ACK feedback of the PDSCH is in the time slot (m+k1), that is, the time slot n. medium transmission (specifically, the transmission resources in time slot n, such as symbol position, RB resources, etc., can be obtained according to the PUCCH resource indication field in the PDCCH, which is not limited here); then when it is determined that the first carrier needs to be in time slot n PUCCH transmission is performed in the first carrier, and according to the rules of PUCCH carrier switching (the specific rules are not limited), it is determined that PUCCH carrier switching needs to be performed in the time slot n of the first carrier, then according to the method (1) of the embodiment of the present disclosure, It can be determined that the time slot n is the first time unit on the first carrier, and that the time slot n on the overlapping second carrier is the second time unit, then it can be determined that the time slot on the second carrier after the PUCCH carrier switching is performed. The PUCCH is transmitted in the slot n, so that the time unit position of the PUCCH transmission on the target carrier after the PUCCH carrier switching can be determined without any additional signaling indication.

Example two:

As shown in FIG. 4 , the first carrier is a carrier configured before PUCCH carrier switching for PUCCH transmission, and the second carrier is a carrier through which PUCCH can transmit PUCCH through carrier switching. The SCS of the first carrier and the second carrier are the same. It is assumed that on the first carrier, the PUCCH is transmitted according to the sub-slot with a length of 7 symbols as the transmission time unit, that is, the unit of the feedback timing k1 on the first carrier is also a sub-slot; on the second carrier, the PUCCH is transmitted according to the time slot The transmission is made for the transmission time unit.

In the second example, according to the feedback timing, it is determined to perform PUCCH transmission in the sub-slot (m+k1) of the first carrier, that is, the sub-slot 2n, and according to the PUCCH carrier switching rule, the sub-slot 2n of the first carrier is determined. PUCCH carrier switching needs to be performed during the PUCCH carrier switching, then according to the method (1) of the embodiment of the present disclosure, the sub-slot 2n may be determined as the first time unit on the first carrier, and the second time unit on the overlapping second carrier may be determined. is time slot n, it is determined that after the PUCCH carrier switching, the PUCCH will be transmitted in the time slot n on the second carrier, so that it can be determined that after the PUCCH carrier switching, the PUCCH will be transmitted on the target carrier without any additional signaling instructions. Time unit location.

Example three:

The first carrier is a carrier configured before PUCCH carrier switching for PUCCH transmission, and the second carrier is a carrier through which PUCCH can perform PUCCH transmission through carrier switching. The SCS of the first carrier is 15 kHz, and the SCS of the second carrier is 30 kHz. The PUCCH is transmitted on both the first carrier and the second carrier according to the time slot as the transmission time unit, then when it is determined that the first carrier needs to perform PUCCH transmission in the time slot n, and the first carrier is determined according to the rules of PUCCH carrier switching It is necessary to perform PUCCH carrier switching in the time slot n of the first carrier, then according to the method (2) of the embodiment of the present disclosure, it can be determined that the time slot n is the first time unit on the first carrier, and the first time unit on the second carrier that overlaps with it can be determined. There are multiple two time units, which are time slots 2n and 2n+1 respectively, then determine the target time unit in the multiple time units overlapping with the first time unit as the second time unit, and the target time unit can be passed through Determined in several ways:

Mode 1, the first time unit in the multiple time units on the second carrier is used as the second time unit for PUCCH transmission, that is, it is determined that the PUCCH is transmitted in the time slot 2n on the second carrier, as shown in Figure 5;

Mode 2: Use the last time unit of multiple time units on the second carrier as the second time unit for PUCCH transmission, that is, determine to transmit the PUCCH in time slot 2n+1 on the second carrier, as shown in Figure 6 ;

Manner 3: The first time unit in which the available PUCCH resource exists among the multiple time units on the second carrier is used as the second time unit for PUCCH transmission. For example: assuming that the PUCCH resources do not overlap with the downlink symbols or SSB symbols configured by the high-level signaling, that is, there are available PUCCH resources in the time slot 2n, then determine to transmit the PUCCH in the time slot 2n on the second carrier, as shown in Figure 5; There is no available PUCCH resource in time slot 2n, but there is available PUCCH resource in 2n+1 (for example, the PUCCH resource does not overlap with the downlink symbol or SSB symbol configured by higher layer signaling), then determine the time slot 2n+ on the second carrier 1 transmits PUCCH, as shown in Figure 6;

Manner 4: The last time unit in which the available PUCCH resource exists among the multiple time units on the second carrier is used as the second time unit for PUCCH transmission. For example, assuming that there are available PUCCH resources in both the time slot 2n and the time slot 2n+1, it is determined to transmit the PUCCH in the time slot 2n+1 on the second carrier.

Mode 5: According to the start symbol (or start time) of the PUCCH in the first time unit on the first carrier, the time unit on the second carrier that overlaps with the start symbol is determined as the second time unit, that is, it is determined at The PUCCH is transmitted in the time slot 2n on the second carrier, as shown in FIG. 5 .

Mode 6: According to the end symbol (or end time) of the PUCCH in the first time unit on the first carrier, it is determined that the time unit on the second carrier that overlaps with the end time is the second time unit, that is, it is determined on the second carrier. The PUCCH is transmitted in the time slot 2n+1, as shown in FIG. 6 .

Manner 7: Among the time units overlapping with the first time unit, the first time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier is determined as the second time unit.

Manner 8: In the time unit overlapping with the first time unit, the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier is determined as the second time unit.

Example four:

The first carrier is the carrier configured before PUCCH carrier switching for PUCCH transmission, and the second carrier is the carrier on which PUCCH can perform PUCCH transmission through carrier switching. is 30kHz. The PUCCH is transmitted on the first carrier according to the time slot as the transmission time unit, and the PUCCH is transmitted on the second carrier according to the sub-slot with a length of 7 symbols as the transmission time unit. It is determined that the time slot n of the first carrier needs to be PUCCH carrier switching, then according to the method (2) of the embodiment of the present disclosure, it can be determined that the time slot n is the first time unit on the first carrier, and it is determined that there are multiple second time units on the second carrier that overlap with it, are respectively the sub-slot 2n and the sub-slot 2n+1, then the target time unit in the multiple time units overlapping with the first time unit is determined as the second time unit, and the target time unit can be in the following ways Sure:

Mode 1: Use the first time unit of multiple time units on the second carrier as the second time unit for PUCCH transmission, that is, determine to transmit the PUCCH in the sub-slot 2n on the second carrier, as shown in Figure 7 ;

Mode 2: The last time unit in the multiple time units on the second carrier is used as the second time unit for PUCCH transmission, that is, it is determined that the PUCCH is transmitted in the sub-slot 2n+1 on the second carrier, as shown in FIG. 8 . Show;

Manner 3: The first time unit in which the available PUCCH resource exists among the multiple time units on the second carrier is used as the second time unit for PUCCH transmission. For example: Assuming that the PUCCH resources do not overlap with the downlink symbols or SSB symbols configured by the high-level signaling, that is, there are available PUCCH resources in the sub-slot 2n, it is determined to transmit the PUCCH in the sub-slot 2n on the second carrier, as shown in Figure 7 Assuming that there is no available PUCCH resource in the subslot 2n, but there is an available PUCCH resource in the subslot 2n+1, it is determined to transmit the PUCCH in the subslot 2n+1 on the second carrier, as shown in Figure 8 ;

Manner 4: The last time unit in which the available PUCCH resource exists among the multiple time units on the second carrier is used as the second time unit for PUCCH transmission. For example, assuming that there are available PUCCH resources in both the subslot 2n and the subslot 2n+1, it is determined to transmit the PUCCH in the subslot 2n+1 on the second carrier.

Mode 5: According to the start symbol (or start time) of the PUCCH in the first time unit on the first carrier, the time unit on the second carrier that overlaps with the start symbol is determined as the second time unit, that is, it is determined at The PUCCH is transmitted in the sub-slot 2n on the second carrier, as shown in FIG. 7 .

Mode 6: According to the end symbol (or end time) of the PUCCH in the first time unit on the first carrier, it is determined that the time unit on the second carrier that overlaps with the end time is the second time unit, that is, it is determined to be on the second carrier The PUCCH is transmitted in the subslot 2n+1 of , as shown in FIG. 8 .

Manner 7: Among the time units overlapping the first time unit, the first time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier is determined as the second time unit.

In the above-mentioned embodiments of the present disclosure, only some SCSs are taken as an example, and the case of replacing them with other SCSs is similar, and will not be repeated here; the above only takes the time slot as the PUCCH transmission time unit as an example, and the PUCCH transmission time is changed on any carrier The unit is a subslot, or the two carriers are subslots with different numbers of symbols. For example, the transmission time unit of one carrier is a subslot of 2 symbols, and the transmission time unit of the other carrier is a subslot of 7 symbols. Subslots, the specific implementation methods are similar, and will not be repeated here; the above only takes the PUCCH carrying the HARQ-ACK of the PDSCH scheduled by the PDCCH as an example, and the PDSCH of the scheduled PDCCH is replaced by the PDCCH that needs to perform HARQ-ACK. The situation is similar, The difference is that the HARQ-ACK at this time can be the HARQ-ACK of the PDCCH itself. When the PUCCH carries other UCIs, the situation is similar. The difference may be that for CSI and/or SR, the PUCCH transmission on the first carrier is located. The first time unit and the specific resources therein are determined according to the high-layer signaling configuration, and are not notified based on the PDCCH.

The above examples 1 to 4 are only used to describe the methods (1) and (2) of determining the second time unit. It should be noted that the second carrier can also be determined according to the methods (3) and (4). The second time unit for PUCCH transmission, for example: determining the second time unit according to the indication of the first indication field in the DCI corresponding to the PUCCH for which carrier switching is required, or determining the second time unit according to predefined or preconfigured information Second time unit. Specifically, the second time unit for transmitting the PUCCH on the second carrier can be directly determined by way (3) or way (4), or an offset value can be determined according to the way in way (3) or way (4), based on The offset value and the first time unit determine the second time unit on the second carrier. For example, the offset value is a symbol offset relative to the starting position of the first time unit, or the offset value is relative to the start position of the first time unit. The offset value from the start of the first time unit that overlaps the first time unit on the second carrier, for example, when there are multiple time units on the second carrier that overlap the first time unit, such as the situation shown in Figure 5-8 , it can be determined whether the second time unit on the second carrier is the first time unit or the second time unit in the two time units overlapping with the first time unit according to whether the offset value is 0 or 1.

The embodiments of the present disclosure are described by taking the case of synchronous CA between different carriers as an example, that is, the boundaries of radio frames on different carriers are aligned, and the time slot boundaries of different carriers under the same SCS condition are also aligned; It should be noted that it can also be applied to the case of asynchronous CA, that is, the time slot numbers between different carriers differ by a fixed offset value (offset). The time slot n on one carrier is aligned on the second carrier is not necessarily time slot n, it may be time slot m, m=n+offset, the unit of offset is time slot, if the subcarrier spacing is different, the offset will be in the form of time slot n. It is represented by the number of time slots corresponding to a reference SCS. In this case, the second time unit corresponding to the second carrier can still be determined by using the method of the embodiment of the present disclosure.

As shown in FIG. 9 , an embodiment of the present disclosure provides a PUCCH transmission method, which is applied to a network side device, and specifically includes the following steps:

Step 91: The network side device determines a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier.

The first carrier is a carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the terminal determines to perform PUCCH carrier switching in a first time unit of the first carrier. The first carrier is a carrier originally configured to transmit PUCCH, such as PCell or PUCCH Scell or PScell. The network-side device may determine the time unit position for transmitting the PUCCH on the first carrier, that is, determine the first time unit, and the first time unit is the time unit position where the network-side device receives the PUCCH before the PUCCH carrier switching is performed .

For example, for HARQ-ACK, the time unit (such as a time slot or sub-slot) where the PUCCH carrying HARQ-ACK is transmitted can be determined according to a dynamic or semi-static feedback timing relationship. The transmission period and offset configured on the carrier determine the periodic transmission opportunity. For example, for CSI, the configured period is 2 timeslots and the offset is 0 (that is, the offset relative to the first timeslot in a radio frame). shift value), then it is determined that the

time slots #

Step 92: The network side device determines, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier.

The second carrier is a carrier for transmitting PUCCH after the terminal performs PUCCH carrier switching. That is, the second carrier is a carrier that can perform PUCCH transmission through PUCCH carrier switching. Specifically, the terminal is configured or allowed to perform PUCCH handover between the first carrier and the second carrier. The network side device determines, according to the first time unit, a second time unit for transmitting PUCCH on the second carrier after the carrier switching, so that the PUCCH can be received at the second time unit on the second carrier after the carrier switching.

In one embodiment, switching from the first carrier to the second carrier, that is, under normal circumstances, the PUCCH is transmitted on the first carrier, and when the switching conditions are met and carrier switching is required, the first carrier is switched to the second carrier. to transmit PUCCH.

Step 93: The network side device receives the PUCCH sent by the terminal in the second time unit of the second carrier.

After determining the second time unit for PUCCH transmission on the second carrier based on the first time unit for PUCCH transmission determined on the first carrier, the network side device uses the second time unit of the second carrier to receive the PUCCH, and completes the process. PUCCH transmission after PUCCH carrier switching. In this case, if the terminal no longer sends PUCCH in the first time unit of the first carrier, the network-side device will no longer receive PUCCH in the first time unit of the first carrier, and the transmission behavior and reception of PUCCH The behavior is switched to the second time unit of the second carrier.

In the first time unit in which the PUCCH needs to be transmitted on the first carrier, if it is determined that the PUCCH carrier switching is required, the target carrier after the PUCCH carrier switching may be determined as the second carrier according to a predetermined rule, according to the first carrier on the first carrier. A time unit, determining a second time unit on the second carrier, and receiving the PUCCH in the second time unit of the second carrier. The information carried on the PUCCH transmitted in the second time unit of the second carrier is the UCI on the PUCCH that needs to be transmitted in the first time unit of the first carrier before performing the PUCCH carrier switching (or only a part of it). information), after the PUCCH carrier switching, there is no need to perform PUCCH transmission in the first time unit of the first carrier, thereby realizing the PUCCH switching from one carrier to another carrier for transmission.

The terminal is configured or allowed to perform PUCCH carrier switching between the first carrier and the second carrier, then after the carrier switching, the position where the network side device receives the PUCCH changes, for example: The first time unit of one carrier transmits PUCCH, and then switches to transmit PUCCH in the second time unit of the second carrier, then the network-side device switches from receiving the PUCCH in the first time unit of the first carrier to the first time unit of the second carrier. Two time units receive the PUCCH.

Specifically, the determining, according to the first time unit, the second time unit for performing PUCCH transmission on the second carrier may include one of the following:

Mode (1): determine the time unit on the second carrier that overlaps with the first time unit as the second time unit;

Specifically, the target time unit may include one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

The symbols occupied by the PUCCH on the first carrier may be multiple symbols in the time domain, and different symbols may overlap with different time units. One of the time units may be selected as the target time unit, for example, the first time unit or the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier may be selected.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

It does not overlap in the time domain with the uplink transmission configured by the high-level signaling on the second carrier; wherein, the uplink transmission configured by the high-level signaling is the uplink transmission without PDCCH scheduling trigger, such as: SRS, SP-CSI, Semi-static uplink transmission such as CG PUSCH;

Meets the preparation time requirement of the information carried by the PUCCH.

The PUCCH resource that satisfies the preparation time requirement of the information carried on the PUCCH, for example, when the HARQ-ACK is transmitted on the PUCCH, the end position of the downlink transmission of the HARQ-ACK needs to be performed on the PUCCH and the starting position of the PUCCH. A fixed time interval is satisfied, which is the time required for PDSCH processing and preparation for transmission of HARQ-ACK on PUCCH.

For example, it is defined as: T _proc,1 =((N ₁ +d _1,1 +d _1,2 )(2048+144)·κ2 ^−μ )·T _c , where N ₁ is related to the need for HARQ-ACK feedback The processing time related to the processing capacity of PDSCH, select a value in the processing capacity list according to the reference μ, κ is the ratio between the LTE adoption interval and the NR sampling interval, μ is the index of the SCS, and the reference μ is the PDCCH, PDSCH scheduling PDSCH The minimum value of μ corresponding to itself, PUCCH itself, etc., T _C is the NR interval, d _1,1 is the processing time offset value of HARQ-ACK transmission on different uplink channels, if d _1,1 =0 is transmitted on PUCCH , if d _1,1 =1 is transmitted on the PUSCH, d _1,2 is the processing time offset related to the number of symbols occupied by the PDSCH.

Mode (3): Determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH for which carrier switching is required;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

In this embodiment, for the PUCCH with the corresponding DCI, when the PUCCH carrier is switched, the second time unit for transmitting the PUCCH on the second carrier may be determined based on a first indication field in the DCI, the first indication The field may be a reuse of an existing indication field included in the DCI or a newly added indication field. The first indication field is used to indicate a second time unit on a second carrier, or a time-domain offset relative to a time-domain position of the PUCCH on the first carrier, or a time-domain offset relative to the first carrier The time domain offset of the first time unit on the carrier. The unit of the time domain offset may be a symbol or a PUCCH transmission time unit, and the unit of the symbol or the PUCCH transmission time unit is a unit corresponding to the second carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

In this embodiment, a corresponding second time unit on the second carrier may be pre-defined or pre-configured for each first time unit on the first carrier that can perform PUCCH switching, or a time domain offset may be pre-defined or pre-configured an offset value, the time domain offset value is used to indicate the time domain offset of the time domain position of the PUCCH on the second carrier relative to the time domain position of the PUCCH on the first carrier, or to indicate the time domain offset relative to the first time unit shift. The unit of the time domain offset may be a symbol or a PUCCH transmission time unit, and the unit of the symbol or the PUCCH transmission time unit is a unit corresponding to the second carrier.

Optionally, the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier. The SCS of the first carrier and the second carrier are the same; or, the SCS of the first carrier is not greater than the SCS of the second carrier. For example, if the SCS of the second carrier is 15kHz, the SCS of the first carrier is also 15kHz; for another example: the SCS of the second carrier is 30kHz, and the SCS of the first carrier may be 15kHz or 30kHz, etc. .

Optionally, the unit of the first time unit is the same as the unit of the second time unit, for example, the units of the first time unit and the second time unit are time slots, or both have the same length. sub-slot; or, the unit of the first time unit is different from the unit of the second time unit, for example, the number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit . For example: the PUCCH transmission time unit on the first carrier is a time slot, then the PUCCH transmission time unit on the second carrier is also a time slot; the PUCCH transmission time unit on the first carrier is a sub-slot with a length of 7 symbols , the PUCCH transmission time unit on the second carrier can be a time slot or a subslot with a length of 7 symbols, but cannot be a subslot with a length of 2 symbols.

In this embodiment, the unit of the transmission time unit may be one of a time slot and a subslot, and the subslots may have different lengths, such as a 2-symbol subslot or a 7-symbol subslot. If the unit of the PUCCH transmission time unit is not configured on the second carrier, it is determined that the transmission is performed according to the same PUCCH transmission time unit as that on the first carrier or a pre-agreed PUCCH transmission time unit.

The implementation process of the PUCCH transmission method applied to the network side device of the present disclosure is the same as or similar to the implementation process of the PUCCH transmission method applied to the terminal, see Example 1 to Example 4, and will not be repeated here. It should be noted that Examples 1 to 4 are only used to illustrate the methods (1) and (2) of determining the second time unit. It should be noted that the The second time unit for PUCCH transmission on the second carrier is, for example, the second time unit is determined according to the indication of the first indication field in the DCI corresponding to the PUCCH for which carrier switching needs to be performed, or according to a predefined or preconfigured The information determines the second time unit. Specifically, the second time unit for transmitting the PUCCH on the second carrier can be directly determined by way (3) or way (4), or an offset value can be determined according to the way in way (3) or way (4), based on The offset value and the first time unit are used to determine the second time unit on the second carrier.

The embodiments of the present disclosure are described by taking the case of synchronous CA between different carriers as an example, that is, the boundaries of radio frames on different carriers are aligned, and the time slot boundaries of different carriers under the same SCS condition are also aligned; It should be noted that it can also be applied to the case of asynchronous CA, that is, the time slot numbers between different carriers differ by a fixed offset. The second carrier on which slot n is aligned is not necessarily time slot n, but may be time slot m, where m=n+offset. The unit of offset is time slot. If the subcarrier spacing is different, the offset will be corresponding to a reference SCS. It is represented by the number of time slots. In this case, the second time unit corresponding to the second carrier can still be determined by using the method of the embodiment of the present disclosure.

In the PUCCH transmission method of the embodiment of the present disclosure, the method of determining the second time unit for performing PUCCH transmission on the second carrier according to the first time unit is applicable to the terminal and the network side device, that is, the terminal determines the second carrier The method for performing the second time unit for PUCCH transmission on the above is also applicable to the embodiment in which the network side device determines the second time unit for performing PUCCH transmission on the second carrier, and the repeated content is not repeated. In the PUCCH transmission method of the embodiment of the present disclosure, for the terminal, after determining the second time unit on the second carrier, the PUCCH is sent in the second time unit; for the network side device, after determining the second time unit on the second carrier, the PUCCH is sent; After the second time unit, the PUCCH is received in the second time unit.

The above embodiment introduces the positioning method of the present disclosure, and the corresponding device of the embodiment will be further described below with reference to the accompanying drawings.

Specifically, as shown in FIG. 10 , an embodiment of the present disclosure provides a PUCCH transmission apparatus 100, which is applied to a terminal and includes:

a first determining unit 101, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a second determining unit 102, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a sending unit 103, configured to send the PUCCH in the second time unit of the second carrier;

Optionally, the second determining unit 102 specifically includes one of the following:

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

It should be noted here that the above-mentioned device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment applied to the terminal, and can achieve the same technical effect, and the same technical effect in this embodiment will not be discussed here. The same parts and beneficial effects of the method embodiments will be described in detail.

As shown in FIG. 11 , an embodiment of the present disclosure provides a PUCCH transmission apparatus 110, which is applied to a network side device, including:

a third determining unit 111, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a fourth determining unit 112, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a receiving unit 113, configured to receive the PUCCH sent by the terminal in the second time unit of the second carrier;

Optionally, the fourth determining unit 112 specifically includes one of the following:

The 6th determines subunit, for determining the target time unit in the time unit overlapping with the described first time unit on the second carrier, is the second time unit;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

It should be noted here that the above-mentioned apparatus provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment applied to the network side device, and can achieve the same technical effect, and this embodiment will not be described here. The same parts and beneficial effects as in the method embodiment will be described in detail.

It should be noted that the division of units in the embodiments of the present disclosure is schematic, and is only a logical function division, and other division methods may be used in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units can be realized in the form of hardware, and can also be realized in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the parts that contribute to related technologies, or all or part of the technical solutions, and the computer software products are stored in a storage medium, Several instructions are included to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

As shown in FIG. 12, an embodiment of the present disclosure further provides a terminal, including: a memory 1220, a transceiver 1200, and a processor 1210; wherein, the memory 1220 is used to store computer programs; the transceiver 1200 is used to Send and receive data under the control of the processor 1210;

The processor 1210 is configured to read the computer program in the memory and perform the following operations:

The transceiver 1200 is configured to: transmit the PUCCH in the second time unit of the second carrier;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

It should be noted that, in FIG. 12 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by the processor 1210 and various circuits of the memory represented by the memory 1220 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1200 may be a number of elements, ie, including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium. For different terminals, the user interface 1230 may also be an interface that can externally and internally connect a required device, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like. The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1210 in performing operations.

Optionally, the processor 1210 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device ( Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

The processor is configured to execute any one of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by invoking the computer program stored in the memory. The processor and memory may also be physically separated.

It should be noted here that the above-mentioned terminal provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments applied to the terminal, and can achieve the same technical effect, and the same technical effect will not be discussed here. The same parts and beneficial effects of the method embodiments will be described in detail.

As shown in FIG. 13 , an embodiment of the present disclosure further provides a network-side device, including: a memory 1320, a transceiver 1300, and a processor 1310; wherein, the memory 1320 is used to store computer programs; the transceiver 1300 is used to Send and receive data under the control of the processor 1310; the processor is used to read the computer program in the memory and perform the following operations:

The transceiver 1300 is configured to: receive the PUCCH sent by the terminal in the second time unit of the second carrier;

Optionally, the target time unit includes one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

the information of the second time unit;

a time domain offset relative to the first time unit on the first carrier.

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.

or

13, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1310 and various circuits of memory represented by memory 1320 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1300 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium. The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1300 in performing operations.

The processor 1310 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.

It should be noted here that the above-mentioned network-side device provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments applied to the network-side device, and can achieve the same technical effect, and the present disclosure will not be described here. In the embodiment, the same parts and beneficial effects as the method embodiment will be described in detail.

In addition, a specific embodiment of the present disclosure further provides a processor-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the steps of the above-mentioned PUCCH transmission method are implemented. And can achieve the same technical effect, in order to avoid repetition, it is not repeated here. Wherein, the readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (eg floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), and the like.

As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in one or more of the flowcharts and/or one or more blocks of the block diagrams.

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implement the functions specified in the flow or flows of the flowchart and/or the block or blocks of the block diagram.

These processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that The instructions that execute provide steps for implementing the functions specified in the flow or flows of the flowchart and/or the block or blocks of the block diagrams.

It should be noted that it should be understood that the division of the above modules is only a division of logical functions, and in actual implementation, all or part of them may be integrated into a physical entity, or may be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware. For example, the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuit (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The terms "first", "second", etc. in the description and claims of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used can be interchanged under appropriate circumstances such that the embodiments of the disclosure described herein are implemented in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices. In addition, the use of "and/or" in the specification and the claims means at least one of the linked objects, such as A and/or B and/or C, is meant to include A alone, B alone, C alone, and both A and B Existence, B and C exist, A and C exist, and 7 cases where A, B, and C all exist. Similarly, the use of "at least one of A and B" in this specification and in the claims should be understood to mean "A alone, B alone, or both A and B present."

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, provided that these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to cover such modifications and variations.

Claims

A PUCCH transmission method, comprising:

The terminal determines a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

The terminal determines, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

sending, by the terminal, the PUCCH in a second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching. PUCCH carrier switching is performed in a time unit.
The method according to claim 1, wherein the determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier comprises one of the following:

determining that the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining that the target time unit in the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

The second time unit is determined according to the preconfigured information of the first time unit.
The method of claim 2, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The method according to claim 2, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The method according to claim 2, wherein the pre-configured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The method according to claim 3, wherein the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
The method of claim 1, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The method of claim 1, wherein the unit of the first time unit is the same as the unit of the second time unit;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A PUCCH transmission method, comprising:

The network side device determines a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

The network side device determines, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

receiving, by the network-side device, the PUCCH sent by the terminal in the second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching. PUCCH carrier switching is performed in a time unit.
The method according to claim 9, wherein the determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier comprises one of the following:

determining that the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining that the target time unit in the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

The second time unit is determined according to the preconfigured information of the first time unit.
The method of claim 10, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The method according to claim 10, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The method according to claim 10, wherein the pre-configured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The method of claim 11, wherein the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
The method of claim 9, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The method of claim 9, wherein the unit of the first time unit is the same as the unit of the second time unit;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A terminal, comprising: a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

The transceiver is configured to: transmit the PUCCH in a second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching. PUCCH carrier switching is performed in a time unit.
The terminal according to claim 17, wherein the determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier comprises one of the following:

determining that the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining that the target time unit in the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

The second time unit is determined according to the preconfigured information of the first time unit.
The terminal of claim 18, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The terminal according to claim 18, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The terminal according to claim 18, wherein the preconfigured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The terminal according to claim 19, wherein the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
The terminal of claim 17, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The terminal according to claim 17, wherein the unit of the first time unit is the same as the unit of the second time unit;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A network side device, comprising: a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

The transceiver is configured to: receive the PUCCH sent by the terminal in the second time unit of the second carrier;

Wherein, the first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching, and the terminal determines that the first carrier is the first carrier of the first carrier. PUCCH carrier switching is performed in a time unit.
The network-side device according to claim 25, wherein the determining, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier comprises one of the following:

determining that the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining that the target time unit in the time unit overlapping with the first time unit on the second carrier is the second time unit;

determining the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH that needs to perform carrier switching;

The second time unit is determined according to the preconfigured information of the first time unit.
The network side device according to claim 26, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The network side device according to claim 26, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The network-side device according to claim 26, wherein the pre-configuration information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The network side device according to claim 27, wherein the available PUCCH resources are PUCCH resources that satisfy the first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
The network side device according to claim 25, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The network side device according to claim 25, wherein the unit of the first time unit is the same as the unit of the second time unit;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A PUCCH transmission device, comprising:

a first determining unit, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a second determining unit, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a sending unit, configured to send the PUCCH in the second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching, and the terminal is determined in the first time unit of the first carrier Perform PUCCH carrier switching.
The apparatus according to claim 33, wherein the second determining unit specifically includes one of the following:

a first determination subunit, configured to determine the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a second determination subunit, configured to determine a target time unit in the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a third determining subunit, configured to determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH for which carrier switching is required;

The fourth determining subunit is configured to determine the second time unit according to the preconfigured information of the first time unit.
The apparatus of claim 34, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The apparatus according to claim 34, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The apparatus according to claim 34, wherein the pre-configured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The apparatus of claim 35, wherein the available PUCCH resources are PUCCH resources that satisfy a first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
34. The apparatus of claim 33, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The apparatus of claim 33, wherein the unit of the first unit of time is the same as the unit of the second unit of time;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A PUCCH transmission device, comprising:

a third determining unit, configured to determine a first time unit for performing physical uplink control channel PUCCH transmission on the first carrier;

a fourth determining unit, configured to determine, according to the first time unit, a second time unit for performing PUCCH transmission on the second carrier;

a receiving unit, configured to receive the PUCCH sent by the terminal in the second time unit of the second carrier;

The first carrier is the carrier that transmits PUCCH before the terminal performs PUCCH carrier switching, and the second carrier is the carrier that transmits PUCCH after the terminal performs PUCCH carrier switching. PUCCH carrier switching is performed in a time unit.
The apparatus according to claim 41, wherein the fourth determining unit specifically includes one of the following:

a fifth determining subunit, configured to determine the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

The sixth determination subunit, for determining the target time unit in the time unit overlapping with the first time unit on the second carrier, which is the second time unit;

a seventh determination subunit, configured to determine the second time unit according to the indication information of the first indication field of the downlink control information DCI corresponding to the PUCCH for which carrier switching is required;

The eighth determination subunit is configured to determine the second time unit according to the preconfigured information of the first time unit.
The apparatus of claim 42, wherein the target time unit comprises one of the following:

the first time unit in the time units overlapping with the first time unit;

the last time unit in the time unit overlapping with the first time unit;

In the time unit overlapping with the first time unit, the first time unit of available PUCCH resources is included;

In the time unit overlapping with the first time unit, the last time unit of available PUCCH resources is included;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the start time of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end symbol of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a time unit that overlaps with the end moment of the PUCCH on the first carrier;

Among the time units that overlap with the first time unit, there is a first time unit that overlaps with symbols in the symbol set occupied by the PUCCH on the first carrier;

Among the time units overlapping with the first time unit, there is the last time unit that overlaps with the symbols in the symbol set occupied by the PUCCH on the first carrier.
The apparatus according to claim 42, wherein the indication information of the first indication field includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The apparatus according to claim 42, wherein the pre-configured information of the first time unit includes one of the following:

the information of the second time unit;

a time domain offset relative to the time domain position of the PUCCH on the first carrier;

a time domain offset relative to the first time unit on the first carrier.
The apparatus of claim 43, wherein the available PUCCH resources are PUCCH resources that satisfy a first condition;

The first condition includes at least one of the following:

Does not overlap with downlink symbols on the second carrier;

Does not overlap with the symbol occupied by the synchronization signal block SSB on the second carrier;

Does not overlap in the time domain with the uplink transmission configured by the higher layer signaling on the second carrier;

Does not overlap in the frequency domain with the uplink transmission configured by the high-layer signaling on the second carrier;

Meets the preparation time requirement of the information carried by the PUCCH.
The apparatus of claim 41, wherein the subcarrier spacing SCS of the second carrier is greater than or equal to the SCS of the first carrier.
The apparatus of claim 41, wherein the unit of the first unit of time is the same as the unit of the second unit of time;

or

The number of symbols included in the first time unit is less than or equal to the number of symbols included in the second time unit.
A processor-readable storage medium on which a computer program is stored, the computer program implementing the steps of the PUCCH transmission method according to any one of claims 1 to 16 when the computer program is executed by a processor.